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Aktuelle Fachpublikationen

Structural Investigation and Scintillation Properties of Cd1-xZnxWO4 Solid Solution Single Crystals

The strategy for Cd1-xZnxWO4 (x < 0.5) solid solution growth was successfully achieved by the Czochralski method. Polycrystalline samples and crystals of the Cd1-xZnxWO4 system were studied using X-ray diffraction technique. Furthermore, the scintillation properties for Cd1-xZnxWO4 (x < 0.5 ... mehr

Widely available active sites on Ni2P for electrochemical hydrogen evolution – insights from first principles calculations

We present insights into the mechanism and the active site for hydrogen evolution on nickel phosphide (Ni2P). Ni2P was recently discovered to be a very active non-precious hydrogen evolution catalyst. Current literature attributes the activity of Ni2P to a particular site on the (0001) face ... mehr

AuRu/AC as an effective catalyst for hydrogenation reactions

AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore–Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the ... mehr

Structural diversity in new coordination polymers modulated by semirigid ether-linked pyridine-phthalate building block and ancillary ligands: syntheses, structures, and lumine ...

Seven new 2D or 3D coordination polymers based on the flexible and semirigid pyridine-phthalate building block H2pbda (3-(pyridin-3-yloxy)benzene-1,2-dicarboxylic acid), namely 3D [Cd(pbda)]n (1), 3D [Cd3(OH)2(pbda)2]n (2), 3D [Cd(pbda)(4,4′-bpy)]n (3), 3D {[Co(pbda)(4,4′-bpy)]·2H2O}n (4), ... mehr

Palladium-Catalyzed Carbonylative Sonogashira Coupling between Aryl Triazenes and Alkynes

We disclosed a palladium-catalyzed carbonylative Sonogashira reaction with aryl triazenes and alkynes as substrates and methanesulfonic acid as the additive. A series of α,β-ynones were synthesized by this alternative procedure. Notably, bromides, iodides and hydroxyl groups could be well-t ... mehr

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Application of gas-diffusion microextraction to solid samples using the chromatographic determination of [small alpha]-diketones in bread as a case study

Gas-diffusion microextraction (GDME) was applied in the extraction of vicinal diketones in bread samples aiming the determination of these compounds by high-performance liquid chromatography with UV-Vis detection (HPLC-UV). For the first time, GDME was used for direct chemical determination ... mehr

DESI MS based screening method for phthalates in consumer goods

Phthalates are used as plasticizes in many everyday items, but some of them are known as hormone disruptors, being especially harmful during childhood. The European Union therefore restricted their application in children’s toys and certain food packaging to 0.1%w. Due to the ever increasin ... mehr

Aptamer-based colorimetric biosensing of abrin using catalytic gold nanoparticles

In this study we propose a simple and sensitive colorimetric aptasensor for the quantitative analysis of abrin by using catalytic AuNPs for the first time. AuNPs possessed the peroxidase-like activity that could catalyse 3, 3, 5, 5-tetramethylbenzidine (TMB) in the presence of H2O2 , to pro ... mehr

Portable FRET Analyzer for Rapid Detection of Sugar Content

The fluorescence resonance energy transfer (FRET) is widely used as core process in biometric sensors to detect small molecules such as sugars, calcium ions, or amino acids. However, FRET based biosensors with innate weak signal intensity require the use of expensive, high-sensitive equipme ... mehr

Design and fabrication of magnetically functionalized flexible micropillar arrays for rapid and controllable microfluidic mixing

Magnetically functionalized PDMS-based micropillar arrays have been successfully designed, fabricated and implanted for controllable microfluidic mixing. The arrangement of PDMS micropillar arrays inside the microchannel can be flexibly controlled by external magnetic field. As a consequenc ... mehr

Alle Fachpublikationen zu Analytik

Structural Investigation and Scintillation Properties of Cd1-xZnxWO4 Solid Solution Single Crystals

The strategy for Cd1-xZnxWO4 (x < 0.5) solid solution growth was successfully achieved by the Czochralski method. Polycrystalline samples and crystals of the Cd1-xZnxWO4 system were studied using X-ray diffraction technique. Furthermore, the scintillation properties for Cd1-xZnxWO4 (x < 0.5 ... mehr

Widely available active sites on Ni2P for electrochemical hydrogen evolution – insights from first principles calculations

We present insights into the mechanism and the active site for hydrogen evolution on nickel phosphide (Ni2P). Ni2P was recently discovered to be a very active non-precious hydrogen evolution catalyst. Current literature attributes the activity of Ni2P to a particular site on the (0001) face ... mehr

AuRu/AC as an effective catalyst for hydrogenation reactions

AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore–Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the ... mehr

Structural diversity in new coordination polymers modulated by semirigid ether-linked pyridine-phthalate building block and ancillary ligands: syntheses, structures, and lumine ...

Seven new 2D or 3D coordination polymers based on the flexible and semirigid pyridine-phthalate building block H2pbda (3-(pyridin-3-yloxy)benzene-1,2-dicarboxylic acid), namely 3D [Cd(pbda)]n (1), 3D [Cd3(OH)2(pbda)2]n (2), 3D [Cd(pbda)(4,4′-bpy)]n (3), 3D {[Co(pbda)(4,4′-bpy)]·2H2O}n (4), ... mehr

Palladium-Catalyzed Carbonylative Sonogashira Coupling between Aryl Triazenes and Alkynes

We disclosed a palladium-catalyzed carbonylative Sonogashira reaction with aryl triazenes and alkynes as substrates and methanesulfonic acid as the additive. A series of α,β-ynones were synthesized by this alternative procedure. Notably, bromides, iodides and hydroxyl groups could be well-t ... mehr

Alle Fachpublikationen zu Chemie

Immunohistochemistry and mass spectrometry for highly multiplexed cellular molecular imaging

Immunohistochemistry and mass spectrometry for highly multiplexed cellular molecular imaging Laboratory Investigation advance online publication, March 2 2015. doi:10.1038/labinvest.2015.2 Authors: Richard M Levenson, Alexander D Borowsky & Michael Angelo mehr

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 95, 248 (March 2015). doi:10.1038/labinvest.2015.31 mehr

Application of GFP imaging in cancer

Application of GFP imaging in cancer Laboratory Investigation advance online publication, February 16 2015. doi:10.1038/labinvest.2014.154 Author: Robert M Hoffman mehr

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 95, 122 (February 2015). doi:10.1038/labinvest.2014.164 mehr

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 95, 2 (January 2015). doi:10.1038/labinvest.2014.152 mehr

Alle Fachpublikationen zu Labortechnik

Modification of eucalyptus pulp fiber using silane coupling agents with aliphatic side chains of different length

The objective of this work was to evaluate the effect of three silane coupling agents with different aliphatic chain lengths on the hydrophobicity of eucalyptus pulp fiber. The three silanes coupling agents used (isobutyltrimethoxysilane, methyltrimethoxysilane, and n‐octyltriethoxysilane [ ... mehr

Adsorption behavior of herbicide paraquat from aqueous solutions using starfish particles: kinetic, isotherm, and thermodynamic studies

Abstract The adsorption of paraquat (PQ) on starfish particles was investigated to calculate the kinetic, isotherm, and thermodynamic parameters. The experiments were carried out as a function of particle size of adsorbent, adsorbent dosage, contact time, initial PQ concentration, stirri ... mehr

Predicting Permeate Fluxes and Rejection Rates in Reverse Osmosis and Tight‐Nanofiltration Processes

Abstract The performance of reverse osmosis and tight nanofiltration with flat‐sheet membranes can be predicted accurately. The proposed numerical model solves the local momentum and mass conservation equations in the module's feed channel with solution‐diffusion boundary conditions. Bot ... mehr

The study of binary interaction parameters on VLE for alternative refrigerant mixtures

Abstract The vapor–liquid equilibrium (VLE) data for hydrofluorocarbons (HFCs) + hydrocarbons (HCs) and HFCs + dimethyl ether (DME) are correlated by the Soave–Redlich–Kwong, Peng–Robinson, and Carnahan–Starling–DeSantis, respectively, with one adjustable binary interaction parameter kij ... mehr

Aluminum pigments encapsulated with hybrid silica film with carboxyl groups and their stability and dispersibility in aqueous media

ABSTRACT Aluminum pigments encapsulated with hybrid SiO2 film with carboxyl (–COOH) groups were prepared through a sol‐gel process of tetraethoxysilane (TEOS) and vinyl triethoxysilane (VTES), followed by radical copolymerization of methyl methacrylate (MMA) and acrylic acid (AA) with t ... mehr

Alle Fachpublikationen zu Verfahrenstechnik

Oxidative potential of particulate matter at a German motorway

Ambient particulate matter (PM10) was sampled alongside a motorway in North-Rhine Westphalia, Germany, during a one-year period. In sum, 120 PM10 samples on quartz fibre filters, 60 samples at each side of the motorway, were taken during clear cross-wind direction situations, i.e. upwind (l ... mehr

One-Pot Enzymatic Conversion of Carbon Dioxide and Utilization for Improved Microbial Growth

We developed a process for one-pot CO2 conversion and utilization based on simple conversion of CO2 to bicarbonate at ambient temperature with no energy input, by using the cross-linking-based composites of carboxylated polyaniline nanofibers (cPANFs) and carbonic anhydrase. Carbonic anhydr ... mehr

Direct Identification of Diverse Alicyclic Terpenoids in Suwannee River Fulvic Acid

The chemical complexity of dissolved organic matter (DOM) obstructs our ability to definitively recover source compounds from within DOM, an objective which has the capacity to alter our understanding of carbon sequestration on a global scale. To advance compositional studies of DOM we have ... mehr

Elevated Mobility of Persistent Organic Pollutants in the Soil of a Tropical Rainforest

Semivolatile persistent organic pollutants (POP) are bioaccumulative and toxic contaminants. Their global distribution depends on source distribution, atmospheric transport, degradation, and the exchange with ocean and land surfaces. Forests are crucial terrestrial reservoirs due to the com ... mehr

Sustainability, Vol. 7, Pages 3665-3682: Opportunity Costs of Carbon Emissions Stemming from Changes in Land Use

The REDD (Reducing Emissions from Deforestation and Forest Degradation) mechanism allows carbon sinks to be used as carbon credits in order to offset emissions from other sources. However, this practice has raised a number of issues relating to financial incentives. In this study, we develo ... mehr

Alle Fachpublikationen zu Umwelttechnik
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